Preheat oven to 350°F. Grease an 8×8 or 9×9-inch baking dish.
Add cubed keto bread to the dish.
In a large bowl, whisk eggs, heavy cream, almond milk, sweetener, molasses extract, cinnamon, ginger, nutmeg, vanilla, and salt.
Pour the custard mixture evenly over the bread cubes.
Press lightly to help the bread soak.
Let sit 5–10 minutes, or refrigerate overnight for stronger flavor.
Bake 30–35 minutes until the top is golden and the center is set.
Let cool slightly and top with powdered sweetener or syrup.